Velopedia Bicycle Archive
2011 Specialized Stumpjumper Expert Carbon 29er
Original specifications: SRAM Mix drivetrain · 29" wheels.
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At a glance
- Model year
- 2011
- Category
- Mountain
- Sizes
- 15.5", 17.5", 19", 21"
- Colors
- Red/Wht
- In this record
- 26 specifications · archived image
- Archive ID
- 21941
Frameset
| Frame Construction | Bonded/monocoque |
|---|---|
| Frame Material | FACT 8M carbon |
| Fork | RockShox Reba 29, 90mm travel |
| Fork Material | Alloy Steerer, single crown |
Drivetrain
| Component Group | SRAM Mix |
|---|---|
| Shifters | SRAM X.9 |
| Front Derailleur | SRAM X.7, 34.9mm clamp |
| Rear Derailleur | SRAM X.0 |
| Crankset | SRAM Carbon S-2200, 24/38 teeth |
| Bottom Bracket | SRAM PF-30 |
| Cassette | Shimano HG81 |
| Rear Cogs | 10-speed, 11 - 36 teeth |
| Chain | KMC X10 |
| Pedals | Resin Test Ride Pedals |
Brakes
| Brakes | Avid Elixir CR SL brakes, Avid Elixir CR SL levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" - 1 1/2" Campy spec integrated sealed cartridge bearing |
|---|---|
| Handlebar | Specialized XC flat 31.8mm |
| Handlebar Extensions | Not included |
| Stem | Specialized XC |
| Saddle | Specialized BG Phenom Comp |
| Seatpost | Alloy single bolt setback, 27.2mm diameter |
Wheels & Tires
| Hubs | Specialized Hi Lo disc |
|---|---|
| Rims | DT Swiss X450SL, 32-hole |
| Spokes | DT Swiss Competition stainless, 1.8/1.6 double-butted |
| Front Tire | 29 x 1.95" S-Works Renegade |
| Wheel Size | 29" wheels |
Published drivetrain ratios
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
The bar uses the same mechanical-ratio calculation as Compare. Wheel-dependent speed appears only when the record includes an exact ISO/ETRTO rear tire size; no tire size is assumed.
Parts & serviceability
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More qualified parts (4)
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Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2011 Specialized Stumpjumper Expert Carbon 29er · Mountain bike, front suspension · Published sizes: 15.5", 17.5", 19", 21"
Frame and fork
Inspect the frame and fork →Archived: Frame: Bonded/monocoque · Fork: RockShox Reba 29, 90mm travel · Alloy Steerer, single crown
Suspension
Evaluate the suspension →Archived: Fork: RockShox Reba 29, 90mm travel
Drivetrain
Check drivetrain wear →Archived: Group: SRAM Mix · Shifters: SRAM X.9 · Front derailleur: SRAM X.7, 34.9mm clamp · Rear derailleur: SRAM X.0 · Crankset: SRAM Carbon S-2200, 24/38 teeth · Bottom bracket: SRAM PF-30 · Cassette: Shimano HG81 · Rear cogs: 10-speed, 11 - 36 teeth · Chain: KMC X10
Brakes
Inspect the brakes →Archived: Brakes: Avid Elixir CR SL brakes, Avid Elixir CR SL levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" wheels · Rims: DT Swiss X450SL, 32-hole · Hubs: Specialized Hi Lo disc · Front tire: 29 x 1.95" S-Works Renegade
Controls and contact points
Archived: Headset: 1 1/8" - 1 1/2" Campy spec integrated sealed cartridge bearing · Handlebar: Specialized XC flat 31.8mm · Stem: Specialized XC · Seatpost: Alloy single bolt setback, 27.2mm diameter · Saddle: Specialized BG Phenom Comp · Pedals: Resin Test Ride Pedals
Before and during the test ride
Follow the full used-bike inspection order →Have you owned this bike?Help document firsthand fit, ride and maintenance details that may no longer be available.
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Current market
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





